>>392396

https:// www.sciencedaily.com/releases/2012/08/120803103421.htm

"Elephants can communicate using very low frequency sounds, with pitches below the range of human hearing. These low-frequency sounds, termed "infrasounds," can travel several kilometers, and provide elephants with a "private" communication channel that plays an important role in elephants' complex social life. Their frequencies are as low as the lowest notes of a pipe organ."

>>392416

That is to say that bass baffles, like what is used in studios to condition the room to have a flat as possible frequency response, may block this weapon.